【作者】 康晓燕；

【导师】 孙海群；

【作者基本信息】 青海大学 ， 草业科学， 2007， 硕士

【摘要】 本文以克隆植物鹅绒委陵菜为研究对象,从生长特征、生物量分配、生理水平和营养成分等方面,对其在野外试验、田间试验和室内实验中的生物学特征进行了研究,从而系统的了解了鹅绒委陵菜在各种不同环境下克隆生长对策和成分的变化。结果表明:从不同地方引种的鹅绒委陵菜在西宁生长的各项指标大部分不存在显著性差异;且温度胁迫对其影响不明显,而干旱胁迫的影响较明显。这说明鹅绒委陵菜是一种适应性很强的植物,属于典型的低温植物,喜水耐涝,但具有一定的耐旱能力。在不同立地条件、栽培条件、室内异质养分及切除匍匐茎的试验中发现:高养分、适度的遮荫以及高密度的处理都有助于提高鹅绒委陵菜的植株高度;间隔子长度的变化不具有规律性;生物量分配在资源可利用水平低时,偏向于地下部分,否则资源更多的投资给地上部分;异质环境下鹅绒委陵菜的基株和分株有差异;而且匍匐茎在克隆生长中具有重要的作用。在不同产地鹅绒委陵菜块根成分分析的试验中,西宁产的鹅绒委陵菜块根蛋白质和纤维含量显著高于其它地区,而无氮浸出物和水分显著小于其它地区。总之,对鹅绒委陵菜克隆生长、生理变化和块根成分的研究,不仅揭示了自然状态下克隆植物对环境的生态对策而且对草坪建植、产品开发、人工栽培都有一定的指导意义。更多还原

【Abstract】 The study of field and lab experiments was conducted to understand the change of bionomic strategies and ingredient on the clonal plant-Potentilla anserine L. It was studied that growth character, biomass allocation, physiology levels and nutrition of the plant under different conditions. The results were as following:The effects of different areas to planting in xining are not significant. And the effects of different temperature stresses to conductance are also not significant. But the effects of different drought stresses to conductance are significant. This indicated that the plant has far-ranging adaptability belongs to microtherm , water-fast plant and has can fight drought to some extent.In different environments, planting conditions experiments, it helps to the height of plant in high soil nutrient, moderate covering and high density. The change of spacer length has not regulation. In biomass allocation, it partials to belowground mass when resource availability is low, otherwise it invests in overground mass. In heterogeneous nutrient experiment, there are hierarchical and significant effects of plant on ramet and genet. The stoloniferous has important function to clonal growth in severing stolon experiment.In analyzing earthnut ingredient experiment, the content of CP and CF in xining are higher than other areas. But the content of NFE and water are less than other areas.In general, this experiment that studies the clonal growth, physiology levels and earthnut ingredient in Potentilla anserine L.can offer reference for the bionomic strategies, planting lawn, empoldering manufacture and manual work of the plant.更多还原